Widely used in professional meteorology


Over 10 years of use in professional meteorology makes it a reliable choice. Flexible input options accept up to 8 analog, 4 digital sensors while RS-485 MODBUS RTU interface makes it a great choice for modern smart sensors. 

Along side wireless GSM/GPRS data transmission, an internal SD memory card stores data and a live sensor data feed is available through its RS-232 interface in ASCII and SCADA compatible MODBUS RTU formats.

Agricultural use requiring reliability & stability


Precision agriculture can only be as precise as the data it is based on. EasyLogGSM measurement precision is not-affected by seasonal fluctuations in temperature and is a proven platform for professional measurements. Simple to use, simple to configure, precise and reliable.

Precision ports for high-end instrumentation


Critical research and climate monitoring solutions requiring temperature stable measurement with precision to the 8th decimal. Temperature compensated 8x analog inputs including PT100 ports for all-year measurement stability and reliability.

Remote locations needing low-power and reliability


When a service trip calls for a 5 hour hike, ultimate reliability and ease of use in the field are essential. Compare the cost of one service trip with the value of a reliable weather station. EasyLogGSM is reliable. Reliability saves you time and money.

Start, simple to setup and expandable as you grow


Even small businesses can now afford a professional data logging solution. Easy to use and expandable for future growth. Connect any type of sensor from turf sensors, soil moisture and more to the flexible and configurable  input ports.


Data sending options

1. Take total control of your data by sending directly to your server or software. 

2. Reduce your risk and increase flexibility by using weather map, our managed data solution with automatic backup. Export or forward data to your servers anywhere. advantages

Simplify setup of your weather station network, reduce setup time and reduce mistakes by using a single default data-gateway for wireless upload of your data.

  • backs up your data and allows further forwarding to one or multiple servers of your choice
  • Export data in JSON or CSV format which is compatible with most analytical software and also Microsoft Excel


EasyLog software does professional data logging setup and configuration the easy way

Request a free demo and see for your self how easy data logging with EasyLog software compatible data loggers can be. EasyLog is compatible with the following data logger hardware:

  • EasyLogGSM (8x analog, 4x digital, 3x PT100, 8x serial, 2x serial PLC/SCADA ports, 1x USB port, SD memory card)
  • METARlogGSM (8x analog, 4x digital, 3x PT100, 8x RS485/232 serial sensors, 1x serial PLC/SCADA ports, 1x USB port, SD memory card)
  • ProLogGSM (20x analog, 8x digital, 10x PT100, 8x RS485/232 serial sensors, 1x serial PLC/SCADA ports, 1x USB port, SD memory card)


8x analog & 4x digital inputs

  • Single ended inputs with transient-voltage-protection. 0...2.5 V with max input voltage 6.5 V
  • Differential inputs with low-pass filter. Range ± 2.5 V with max input voltage 3 V
  • Digital inputs with transient-voltage-protection. Max input voltage 13 V. Freqvencny range up to 3 kHz

Serial sensor port

  • RS485 and RS232 serial ports are protected with transient-voltage-protection

Serial output port

  • RS485 and RS232 serial ports are protected with transient-voltage-protection

4x power input options

  • 12 V power-in input has reverse polarity protection. Voltage range 7 to13 V
  • 12 V Battery connection with high-efficiency battery charger is protected by a 750 mA PPTC resettable fuse/switch to guard against immediate battery discharge from short circuits
  • Ultra-low power-in from 4 to 20 V has reverse polarity protection and transient-voltage-protection. For portable in-the-field logger use
  • 12 V Solar system power-in with very wide input voltage of 0...22 V to prevent over-voltage damage

Power output for sensors

  • Protected by a 200 mA max current PPTC resettable fuse/switch against discharge from short circuits
  • Configurable sensor power-out to enable selectively switching on & off sensors to reduce weather station power consumption

USB port

  • USB service port for quick SD card data access
  • Also used to servicing and logger configuration

RT operating system

  • Real-time (RT) operating system features watchdog timers to monitor all operations and protect against logger lockup
  • Automatic wireless modem reconnect with smart delay to prevent unnecessary battery drain

Learn more about PowerProtect and PowerProtect Ultimate


The RS-232 logger interface port for computers, PLC or SCADA systems provides real-time meteorological sensor data.  Connect to your existing infrastructure or METAR report generation system. Real-time data is available in the following formats:

Serial ASCII output data format

Date Time Data1 Data2 Data3… CRLF
Example: (space delimited format)
07.06.2017 04:43:00 3.117 13.839 99.043 -61.000
07.06.2017 04:44:00 3.214 13.910 99.093 -60.000
07.06.2017 04:45:00 3.201 13.880 99.193 -61.000

If required, CSV data format can be set.
Example: (comma delimited format)

    MODBUS RTU register data map

    • Data format: IEEE754 32 bit float numbers (standard). Each number is a float number (4 Bytes and made of two Modbus registers, Hi & Lo)
    • Response: The last measured value from OUT1…OUT32.
    • Read input registers uses 0x04 query. The number of read out registers has to be even. Logger RS-232 address range is from 00…99.
    OUT1 MSW 100 0x64
    101 0x65
    OUT2 MSW 102 0x66
    103 0x67
    OUT3 MSW 104 0x68
    105 0x69
    OUT32 MSW 162 0xA2
    163 0xA3


    Proven years of reliability, ease to use interface and flexibility of analog and digital inputs.

    Years of reliability

    • Long history of use - proven in over 10 years of field use
    • Low power - micro-power sleep and only 7 mA when awake and measuring
    • Simple to configure and setup - EasyLog software makes configuring simple and time-efficient

    Versatile interface

    • 8 analog inputs
    • 4 digital inputs
    • 3 platinum PT100 Inputs + 1 reference
    • 8 max RS-485 or RS-232 sensors (MODBUS)
    • Serial-out for real-time data in multiple formats
    • USB service port for configuration and quick SD card data access

    Real-time data output

    • Serial RS-232 port with real-time ASCII data in two formats and MODBUS RTU

    Technical features

    • Separate RS-232 computer interface for easy setup
    • Universal SD card data storage (FAT32)
    • Daily automatic time synchronization with temperature compensated clock and backup battery
    • Power consumption between measurements in sleep mode is 40 μA max
    • Power when actively measuring 7 mA (typical)

    EasyLogGSM data logger is based on an ultra-low power microcontroller combined with high precision analog-digital converters and real time multitasking operating system. This ensures flexible and reliable continuous operation with long battery life and system reliability.